Nanoporous Activated Carbon Derived from Rice Husk for High Performance Supercapacitor

Figure 6

CV (a) and charge/discharge (b) curves for nonporous carbon and nanoporous carbon at the scan rate of 10 mV s⁻¹ and current density of 1 A g⁻¹. (c) CV curves of the nanoporous carbon with different scan rate of 10, 20, 50, 100, 200, and 500 mV s⁻¹, respectively. (d) Charge/discharge curves of the nanoporous carbon with different current density of 1, 2, 5, 10, 15, and 20 A g⁻¹, respectively. (e) Rate performance of the nanoporous carbon electrode. (f) The relationship between energy density and power density for the nanoporous carbon. The electrolyte is 6 M KOH solution.

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